Heathkit H-89 All-In-One Computer

The Heathkit H-89 was available in the late 1970's and early 1980's. It came in kit-form requiring the buyer to assemble and even solder some of the computer boards in the system. It was called the 'All-In-One', since prior to this most computer systems required a terminal and some external storage. This computer had a built in terminal and included a built-in floppy drive.The built-in terminal was equivalent to their own H-19 terminal. There are several related computer models: H-88, Z-89, and Z-90. They shared a common core but each had minor differences with ROM, add-in cards, amount of memory, and whether or not the system came in kit-form or assembled. Models starting with an 'H' for Heathkit came in kit-form. Models starting with 'Z' for Zenith Data Systems came assembled.

The computer's main processor is a Zilog Z-80 running at 2.048 MHz. The system also contained second Z-80 that handled operation of the built-in terminal. The system initially came with 16k of RAM. Later models came standard with 48k of RAM. It supported up to 48k of RAM on the CPU board, but could be expanded to 64k with a memory card that plugged into the CPU board. Multiple operating systems were available from Heath Company: HDOS, CP/M, and UCSD P-System. The built-in disk drive used hard-sectored floppy disks and stored a maximum of 100k per disk. The screen was 12" and supported 80x24 characters with a special '25th Line'. It had 33 character-based graphic symbols.

H89 H89 with original logo

Information from 1982 Heath Catalog:

All-In-One Computer: includes two microprocessors, 48K RAM, built-in disk storage, three serial ports, CP/M capability - and up to $690 of software at no extra charge!

Kit HS-89-1, with anti-glare white CRT, Shpg. wt. 96 lbs. .............   1925.00

Kit HS-89-2, with anti-glare green CRT, Shpg. wt. 96 lbs. .............   1925.00

Kit HS-89-3, with std. white CRT, Shipg. wt. 96 lbs. .....................   1895.00

All-In-One Accessories

Item

Description

Model

Shipping Weight

Price

16K Random Access Memory (RAM) Expansion Set

Retrofit your H/Z-89 All-In-One Computer up to 32K or 48K bytes of RAM with one or two of these memory expansion sets.

H-88-2

1 lb

39.00

64K Random Access Memory (RAM) Expansion Kit

 Expands the RAM capacity of your All-In-One Computer to 64K bytes. Requires H-88 or H/Z-89 with 48K bytes of RAM

WH-88-16

1 lb

 150.00

Three-Port RS-232C Serial Interface

Provide sprinter and telecommunications extendability for older All-In-One Computers

 HA-88-3

 2 lbs

 150.00

Cassette Interface for All-In-One Computer.

Use cassette storage (with appropriate software).

 H-88-5

 2 lbs

 60.00

Backplate Modification Kit

Required to use the H/Z-37, H-77, and H/Z-89 Floppy Disk Systems with non-current model All-In-One Computers (which don't have external brightness control)

H-88-6

2 lbs

50.00

Wire Wrapping Board

With bus connectors. Design custom circuits for the H/Z-89 All-In-One Computer. This board accepts forty-eight 16-in sockets (also fifty-four 14-pin sockets or other combinations). Uses HCA-6 Wire Wrapping Kit and HCA-7 Wire Wrapping Socket Kit

H-88-10

 1 lb

30.00

Soft-sectored Floppy Disk Controller Board

For the H/Z-89 Computer. Doubles on-line data storage capacity of double-sided H-17-4 or single-sided H-17-1 disk drives below. Deduct $100 when you purchase this board on the same order form with an H-89!

Z-89-37

4 lbs

395.00

Hard-Sectored Floppy Disk Controller Board

For the H/Z-89. Use only with H-17-1 Drives below.

H-88-1

3 lbs

120.00

H/Z-89 to Z-47 Interface

H/Z-89 Controller card for Z-47 Disk System

Z-89-47

1 lb

195.00

H/Z-89 to Z-67 Interface

H/Z-89 Controller card for Z-67 Disk System

Z-89-67

 

195.00

Multi-Mode Interface Card

Centronics-style parallel interface allows H/Z-89 to directly interface with MX-80 Printer or use with HWI-8917/8937-1/8947-1 software to enable H/Z-89 to emulate various IBM terminals)

Z-89-11

1 lb

150.00

Double-Sided Floppy Disk Drive

For the H/Z-37 Floppy Disk System. Requires Z-89-37 Soft-Sectored Controller above.

H-17-4

5 lbs

550.00

Single-Sided Floppy Disk Drive

Uses either Z-89-37 Soft-Sectored Controller or H-88-1 Hard-Sectored Controller (both above)

H-17-1

5lbs

325.00

Three-Drive Modification Kit for H-17

A modification to the H-17 system below. It allowed 3 floppy drives in the enclosure.

H-17-3

10 lbs

65.00

H-17 Floppy Disk System

Disk system that was designed for the H8, but could also be used the by H89. Supported single-sided, single density, 48 tpi drives. Up to 2 drives (3 with the H17-3 above). Came in kit-form (H-17) or assembled (WH-17).

H-17

WH-17

28 lbs

28 lbs

595.00

695.00

H-37 Disk System

Kit form of the Z-37 below, came with 1 (HS-37-1) or 2 (HS-37-2) floppy drives.

HS-37-1

HS-37-2

34 lbs

47 lbs.

850.00

1345.00

 Z-37 Disk System

Assembled Dual-Sided Disk System with two drives for 1.28 megabytes of data storage (requires Z-89-37 for use with Z-89)

Z-37

28 lbs

1995.00

 Z-47 Disk System

The dual-drive Z-47 provides enough on-line data storage for extended accounting inventory and mathematical functions - up to over 2.5 megabytes. It accepts 8" IBM 3740 floppy diskettes.

Z-47-BA

66 lbs

3500.00

 Z-67 Disk System

10.782 Megabyte Commercial Winchester Disk System. Also includes Z-89-67 Interface ($195 value; required to interface the Z-67 to the H-89, Z-89 and Z-90 microcomputers).

ZS-67

93 lbs

5995.00

 H-77 Disk System

Kit form of the Z-87 below. Came with 1 (HS-77-1) or 2 (HS-77-2) floppy drives.

 HS-77-1

HS-77-2

34 lbs

47 lbs

625.00

895.00

 Z-87 Disk System

Assembled Single-Sided Disk System with two drives for up to 320K bytes of data storage

Z-87

28 lbs

1195.00

 

 

 

 

 

Black Fabric Anti-Glare CRT Filter

Use this high-quality filter on H/Z-89 All-In-One Computers not equipped with non-glare CRTs.

HCA-4

1 lb

19.95

Dust Cover for H-17

Dust Cover for H-17 Floppy Disk System

HCA-5-17

1 lb

14.00

Dust Cover for the H-89 All-In-One Computer, the Z-89 Desktop Genius Computer and the H/Z-19 Video Terminal

Provides protection from air-borne contaminants.

HCA-5-89

1 lb

14.00

Dust Cover for H/Z-37, H-77 and H/Z-87

Protects H/Z-37, H-77, and H/Z-87

HCA-5-77

1 lb

14.00

Wire Wrapping Kit

Includes wire wrapping tool, 50 feet of wire and 200 pre-cut, pre-stripped wires (50 each in 1", 2", 3", and 4" lengths)

HCA-6

1 lb

13.95

Wire Wrapping Socket Kit

Includes 36 three-level wire wrapping sockets (ranging from 14-pin to 40-pin)

HCA-7

 1 lb

29.95

 


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By Mark Garlanger

If you have any questions or comments, or if you have any old Heathkit equipment or software available, please contact me at: mark (at) garlanger (dot) com